The first assignment was due on the 5th of April 2007, and second assignment will be due on is the 5th of may 2007. Compulsory assignment date – 10 May 2007 we meant that least one assignment should have been submitted by 10th of May 2007 to show that you are active student. It doesn't mean that you have to submitted the first assignment on the 10th of may 2007, that assignment will be later.